The LHCb collaboration recently announced about observation of two resonant
structures \(X_{0}(2900)\)  and \(X_{1}(2900)\)  (hereafter \(X_{0}\)  and \(X_{1}\) ,
respectively) in the invariant \(D^{-}K^{+}\)  mass distribution of the decay \(B^{+}\rightarrow D^{+}D^{-}K^{+}\)  [1]}. In accordance with LHCb,
obtained results constitute the clear evidence for exotic mesons with full
open flavors. At the same time, the collaboration did not exclude models
which explain experimental data using hadronic rescattering effects.
